More warnings when compiling the compiler.

Makefile.shared

@@ -22,7 +22,7 @@ include stdlib/StdlibModules
 
 CAMLC=$(CAMLRUN) boot/ocamlc -g -nostdlib -I boot -use-prims byterun/primitives
 CAMLOPT=$(CAMLRUN) ./ocamlopt -g -nostdlib -I stdlib -I otherlibs/dynlink
-COMPFLAGS=-strict-sequence -principal -w +33..39+48+50 -warn-error A \
+COMPFLAGS=-strict-sequence -principal -absname -w +a-4-9-41-42-44-45-48 -warn-error A \
           -bin-annot -safe-string -strict-formats $(INCLUDES)
 LINKFLAGS=
 

asmcomp/CSEgen.ml

@@ -197,7 +197,7 @@ let remove_load_numbering n =
 
 let kill_addr_regs n =
   { n with num_reg =
-              Reg.Map.filter (fun r n -> r.Reg.typ <> Cmm.Addr) n.num_reg }
+              Reg.Map.filter (fun r _n -> r.Reg.typ <> Cmm.Addr) n.num_reg }
 
 (* Prepend a set of moves before [i] to assign [srcs] to [dsts].  *)
 
@@ -207,7 +207,7 @@ let insert_move srcs dsts i =
   match Array.length srcs with
   | 0 -> i
   | 1 -> instr_cons (Iop Imove) srcs dsts i
-  | l -> (* Parallel move: first copy srcs into tmps one by one,
+  | _ -> (* Parallel move: first copy srcs into tmps one by one,
             then copy tmps into dsts one by one *)
          let tmps = Reg.createv_like srcs in
          let i1 = array_fold2 insert_single_move i tmps dsts in

asmcomp/amd64/CSE.ml

@@ -19,7 +19,7 @@ open Arch
 open Mach
 open CSEgen
 
-class cse = object (self)
+class cse = object
 
 inherit cse_generic as super
 

asmcomp/amd64/arch.ml

@@ -73,11 +73,11 @@ let offset_addressing addr delta =
   | Iindexed2scaled(scale, n) -> Iindexed2scaled(scale, n + delta)
 
 let num_args_addressing = function
-    Ibased(s, n) -> 0
-  | Iindexed n -> 1
-  | Iindexed2 n -> 2
-  | Iscaled(scale, n) -> 1
-  | Iindexed2scaled(scale, n) -> 2
+    Ibased _ -> 0
+  | Iindexed _ -> 1
+  | Iindexed2 _ -> 2
+  | Iscaled _ -> 1
+  | Iindexed2scaled _ -> 2
 
 (* Printing operations and addressing modes *)
 

asmcomp/amd64/proc.ml

@@ -31,13 +31,6 @@ let win64 =
   | "win64" | "mingw64" | "cygwin" -> true
   | _                   -> false
 
-(* Which asm conventions to use *)
-
-let masm =
-  match Config.ccomp_type with
-  | "msvc" -> true
-  | _      -> false
-
 (* Registers available for register allocation *)
 
 (* Register map:
@@ -138,7 +131,6 @@ let phys_reg n =
   if n < 100 then hard_int_reg.(n) else hard_float_reg.(n - 100)
 
 let rax = phys_reg 0
-let rcx = phys_reg 5
 let rdx = phys_reg 4
 let rbp = phys_reg 12
 let rxmm15 = phys_reg 115
@@ -181,14 +173,14 @@ let calling_conventions first_int last_int first_float last_float make_stack
 
 let incoming ofs = Incoming ofs
 let outgoing ofs = Outgoing ofs
-let not_supported ofs = fatal_error "Proc.loc_results: cannot call"
+let not_supported _ofs = fatal_error "Proc.loc_results: cannot call"
 
 let loc_arguments arg =
   calling_conventions 0 9 100 109 outgoing arg
 let loc_parameters arg =
-  let (loc, ofs) = calling_conventions 0 9 100 109 incoming arg in loc
+  let (loc, _ofs) = calling_conventions 0 9 100 109 incoming arg in loc
 let loc_results res =
-  let (loc, ofs) = calling_conventions 0 0 100 100 not_supported res in loc
+  let (loc, _ofs) = calling_conventions 0 0 100 100 not_supported res in loc
 
 (* C calling conventions under Unix:
      first integer args in rdi, rsi, rdx, rcx, r8, r9
@@ -204,7 +196,7 @@ let loc_results res =
      Return value in rax or xmm0. *)
 
 let loc_external_results res =
-  let (loc, ofs) = calling_conventions 0 0 100 100 not_supported res in loc
+  let (loc, _ofs) = calling_conventions 0 0 100 100 not_supported res in loc
 
 let unix_loc_external_arguments arg =
   calling_conventions 2 7 100 107 outgoing arg
@@ -253,7 +245,7 @@ let loc_exn_bucket = rax
 
 (* Volatile registers: none *)
 
-let regs_are_volatile rs = false
+let regs_are_volatile _rs = false
 
 (* Registers destroyed by operations *)
 

asmcomp/amd64/reload.ml

@@ -103,7 +103,7 @@ method! reload_operation op arg res =
 
 method! reload_test tst arg =
   match tst with
-    Iinttest cmp ->
+    Iinttest _ ->
       (* One of the two arguments can reside on stack *)
       if stackp arg.(0) && stackp arg.(1)
       then [| self#makereg arg.(0); arg.(1) |]

asmcomp/amd64/selection.ml

@@ -138,7 +138,7 @@ method! is_simple_expr e =
   | _ ->
       super#is_simple_expr e
 
-method select_addressing chunk exp =
+method select_addressing _chunk exp =
   let (a, d) = select_addr exp in
   (* PR#4625: displacement must be a signed 32-bit immediate *)
   if d < -0x8000_0000 || d > 0x7FFF_FFFF
@@ -175,7 +175,7 @@ method! select_operation op args =
   (* Recognize the LEA instruction *)
     Caddi | Caddv | Cadda | Csubi ->
       begin match self#select_addressing Word_int (Cop(op, args)) with
-        (Iindexed d, _) -> super#select_operation op args
+        (Iindexed _, _)
       | (Iindexed2 0, _) -> super#select_operation op args
       | (addr, arg) -> (Ispecific(Ilea addr), [arg])
       end

asmcomp/arm/CSE.ml

@@ -19,7 +19,7 @@ open Arch
 open Mach
 open CSEgen
 
-class cse = object (self)
+class cse = object
 
 inherit cse_generic as super
 

asmcomp/arm/arch.ml

@@ -157,7 +157,7 @@ let identity_addressing = Iindexed 0
 
 let offset_addressing (Iindexed n) delta = Iindexed(n + delta)
 
-let num_args_addressing (Iindexed n) = 1
+let num_args_addressing (Iindexed _) = 1
 
 (* Printing operations and addressing modes *)
 

asmcomp/arm/proc.ml

@@ -175,7 +175,7 @@ let calling_conventions first_int last_int first_float last_float make_stack
 
 let incoming ofs = Incoming ofs
 let outgoing ofs = Outgoing ofs
-let not_supported ofs = fatal_error "Proc.loc_results: cannot call"
+let not_supported _ofs = fatal_error "Proc.loc_results: cannot call"
 
 (* OCaml calling convention:
      first integer args in r0...r7
@@ -224,7 +224,7 @@ let loc_exn_bucket = phys_reg 0
 
 (* Volatile registers: none *)
 
-let regs_are_volatile rs = false
+let regs_are_volatile _rs = false
 
 (* Registers destroyed by operations *)
 

asmcomp/arm/scheduling.ml

@@ -19,7 +19,7 @@ open Mach
 
 (* Instruction scheduling for the ARM *)
 
-class scheduler = object(self)
+class scheduler = object
 
 inherit Schedgen.scheduler_generic as super
 

asmcomp/arm/selection.ml

@@ -53,7 +53,6 @@ exception Use_default
 let r1 = phys_reg 1
 let r6 = phys_reg 6
 let r7 = phys_reg 7
-let r12 = phys_reg 8
 
 let pseudoregs_for_operation op arg res =
   match op with

asmcomp/arm64/CSE.ml

@@ -19,7 +19,7 @@ open Arch
 open Mach
 open CSEgen
 
-class cse = object (self)
+class cse = object
 
 inherit cse_generic as super
 

asmcomp/arm64/arch.ml

@@ -15,8 +15,6 @@
 (*                                                                        *)
 (**************************************************************************)
 
-let command_line_options = []
-
 (* Specific operations for the ARM processor, 64-bit mode *)
 
 open Format
@@ -81,8 +79,8 @@ let offset_addressing addr delta =
   | Ibased(s, n) -> Ibased(s, n + delta)
 
 let num_args_addressing = function
-  | Iindexed n -> 1
-  | Ibased(s, n) -> 0
+  | Iindexed _ -> 1
+  | Ibased _ -> 0
 
 (* Printing operations and addressing modes *)
 

asmcomp/arm64/emit.mlp

@@ -36,7 +36,6 @@ let reg_trap_ptr = phys_reg 23
 let reg_alloc_ptr = phys_reg 24
 let reg_alloc_limit = phys_reg 25
 let reg_tmp1 = phys_reg 26
-let reg_tmp2 = phys_reg 27
 let reg_x15 = phys_reg 15
 
 (* Output a label *)
@@ -362,7 +361,7 @@ let num_call_gc_and_check_bound_points instr =
   in
   loop instr (0, 0)
 
-let max_out_of_line_code_offset instr ~num_call_gc ~num_check_bound =
+let max_out_of_line_code_offset ~num_call_gc ~num_check_bound =
   if num_call_gc < 1 && num_check_bound < 1 then 0
   else begin
     let size_of_call_gc = 2 in
@@ -606,7 +605,7 @@ let emit_instr i =
         let dst = i.res.(0) in
         let base =
           match addr with
-          | Iindexed ofs -> i.arg.(0)
+          | Iindexed _ -> i.arg.(0)
           | Ibased(s, ofs) ->
               `	adrp	{emit_reg reg_tmp1}, {emit_symbol_offset s ofs}\n`;
               reg_tmp1 in
@@ -633,7 +632,7 @@ let emit_instr i =
         let src = i.arg.(0) in
         let base =
           match addr with
-          | Iindexed ofs -> i.arg.(1)
+          | Iindexed _ -> i.arg.(1)
           | Ibased(s, ofs) ->
               `	adrp	{emit_reg reg_tmp1}, {emit_symbol_offset s ofs}\n`;
               reg_tmp1 in
@@ -905,7 +904,7 @@ let fundecl fundecl =
     num_call_gc_and_check_bound_points fundecl.fun_body
   in
   let max_out_of_line_code_offset =
-    max_out_of_line_code_offset fundecl.fun_body ~num_call_gc
+    max_out_of_line_code_offset ~num_call_gc
       ~num_check_bound
   in
   BR.relax fundecl.fun_body ~max_out_of_line_code_offset;

asmcomp/arm64/proc.ml

@@ -135,7 +135,7 @@ let calling_conventions
 
 let incoming ofs = Incoming ofs
 let outgoing ofs = Outgoing ofs
-let not_supported ofs = fatal_error "Proc.loc_results: cannot call"
+let not_supported _ofs = fatal_error "Proc.loc_results: cannot call"
 
 (* OCaml calling convention:
      first integer args in r0...r15
@@ -171,7 +171,7 @@ let loc_exn_bucket = phys_reg 0
 
 (* Volatile registers: none *)
 
-let regs_are_volatile rs = false
+let regs_are_volatile _rs = false
 
 (* Registers destroyed by operations *)
 

asmcomp/arm64/selection.ml

@@ -76,10 +76,6 @@ let rec run_automata nbits state input =
 let is_logical_immediate n =
   n <> 0 && n <> -1 && run_automata 64 0 n
 
-let is_intconst = function
-    Cconst_int _ -> true
-  | _ -> false
-
 let inline_ops =
   [ "sqrt"; "caml_bswap16_direct"; "caml_int32_direct_bswap";
     "caml_int64_direct_bswap"; "caml_nativeint_direct_bswap" ]

asmcomp/asmlink.ml

@@ -135,7 +135,7 @@ let is_required name =
   try ignore (Hashtbl.find missing_globals name); true
   with Not_found -> false
 
-let add_required by (name, crc) =
+let add_required by (name, _crc) =
   try
     let rq = Hashtbl.find missing_globals name in
     rq := by :: !rq

asmcomp/asmpackager.ml

@@ -99,10 +99,7 @@ let make_package_object ppf members targetobj targetname coercion
   let source_provenance = Timings.Pack targetname in
   let prefixname = chop_extension_if_any objtemp in
   if Config.flambda then begin
-    let size, lam =
-      Translmod.transl_package_flambda
-        components module_ident coercion
-    in
+    let size, lam = Translmod.transl_package_flambda components coercion in
     let flam =
       Middle_end.middle_end ppf
         ~source_provenance
@@ -150,7 +147,7 @@ let build_package_cmx members cmxfile =
   let unit_names =
     List.map (fun m -> m.pm_name) members in
   let filter lst =
-    List.filter (fun (name, crc) -> not (List.mem name unit_names)) lst in
+    List.filter (fun (name, _crc) -> not (List.mem name unit_names)) lst in
   let union lst =
     List.fold_left
       (List.fold_left

asmcomp/clambda.ml

@@ -124,7 +124,7 @@ let rec compare_float_lists l1 l2 =
 
 let compare_constants c1 c2 =
   match c1, c2 with
-  | Uconst_ref(lbl1, c1), Uconst_ref(lbl2, c2) -> String.compare lbl1 lbl2
+  | Uconst_ref(lbl1, _c1), Uconst_ref(lbl2, _c2) -> String.compare lbl1 lbl2
       (* Same labels -> same constants.
          Different labels -> different constants, even if the contents
            match, because of string constants that must not be